Getting following exception when I tries to deploy an ear file in oc4j server. Can any one help me in resolving this problem

08/02/27 14:47:24 WARNING: DeployerRunnable.run java.lang.InstantiationException
: Application: serena is in failed state as initialization failedoracle.oc4j.adm
in.internal.DeployerException: java.lang.InstantiationException: Application: se
rena is in failed state as initialization failed
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:126
)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.OC4JDeployerRunnable.doRun
(OC4JDeployerRunnable.java:52)
at oracle.oc4j.admin.jmx.server.mbeans.deploy.DeployerRunnable.run(Deplo
yerRunnable.java:81)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(Relea
sableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.InstantiationException: Application: serena is in failed st
ate as initialization failed
at com.evermind.server.Application.setConfig(Application.java:496)
at com.evermind.server.Application.setConfig(Application.java:339)
at com.evermind.server.ApplicationServer.addApplication(ApplicationServe
r.java:1895)
at oracle.oc4j.admin.internal.ApplicationDeployer.addApplication(Applica
tionDeployer.java:512)
at oracle.oc4j.admin.internal.ApplicationDeployer.doDeploy(ApplicationDe
ployer.java:196)
at oracle.oc4j.admin.internal.DeployerBase.execute(DeployerBase.java:93)

... 4 more
Caused by: java.lang.InstantiationException: Error initializing ejb-modules: nes
ted exception is: java.lang.reflect.InvocationTargetException
at com.evermind.server.ejb.EJBContainer.postInit(EJBContainer.java:1064)

at com.evermind.server.ApplicationStateRunning.initializeApplication(App
licationStateRunning.java:217)
at com.evermind.server.Application.setConfig(Application.java:438)
... 9 more
Caused by: javax.ejb.EJBException: nested exception is: java.lang.reflect.Invoca
tionTargetException
at com.evermind.server.ejb.EJBUtils.createEJBException(EJBUtils.java:365
)
at com.evermind.server.ejb.EJBUtils.createEJBException(EJBUtils.java:356
)
at com.evermind.server.ejb.BeanAnnotationListener.parseAnnotatedClass(Be
anAnnotationListener.java:54)
at com.evermind.server.ejb.AnnotationParser.notifyAnnotationListeners(An
notationParser.java:201)
at com.evermind.server.ejb.AnnotationParser.parseAnnotations(AnnotationP
arser.java:73)
at com.evermind.server.ejb.EJBPackageDeployment.parseMetaData(EJBPackage
Deployment.java:939)
at com.evermind.server.ejb.EJBContainer.postInit(EJBContainer.java:832)
... 11 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor43.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.evermind.server.ejb.BeanAnnotationListener.parseAnnotatedClass(Be
anAnnotationListener.java:45)
... 15 more
Caused by: java.lang.NoClassDefFoundError: com/oroinc/net/ftp/FTPClient
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
at java.lang.Class.privateGetPublicMethods(Class.java:2519)
at java.lang.Class.getMethods(Class.java:1406)
at com.evermind.server.ejb.deployment.BeanDescriptorAnnotationParser.par
seAnnotations(BeanDescriptorAnnotationParser.java:69)
at com.evermind.server.ejb.deployment.BeanDescriptorAnnotationParser.par
seAnnotations(BeanDescriptorAnnotationParser.java:48)
... 19 more